Olfactory cues play an integral, albeit underappreciated, role in mediating vertebrate social and reproductive behaviour. These cues fluctuate with the signaller's hormonal condition, coincident with and informative about ...

In their recent article Joan Robinson and K. A. Naqvi provide an example which they think ". . . conclusively disproves the notion that the number of switches cannot be more than the number of capital goods in the system." ...